/* ===== 头部样式 ===== */
header {
    background: linear-gradient(135deg, var(--primary-color), #2980b9);
    box-shadow: var(--box-shadow);
    position: sticky;
    top: 0;
    z-index: 100;
}

.header-content {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: clamp(0.75rem, 2vw, 1rem) 0;
    min-height: 3.5rem;
}

.logo {
    font-size: clamp(1.6rem, 3vw, 2rem);
    font-weight: 700;
    color: var(--text-white);
    display: flex;
    align-items: center;
    gap: 0.5rem;
}

.join-btn {
    background: linear-gradient(135deg, var(--success-color), #219653);
    color: var(--text-white);
    border: none;
    padding: 0.1rem clamp(0.5rem, 3vw, 0.75rem);
    border-radius: var(--border-radius);
    cursor: pointer;
    font-weight: 600;
    transition: var(--transition);
    white-space: nowrap;
    font-size: clamp(1.6rem, 2vw, 2em);
    box-shadow: 0 0.125rem 0.5rem rgba(39, 174, 96, 0.3);
    position: relative;
    overflow: hidden;
}

.join-btn::before {
    content: '';
    position: absolute;
    top: 0;
    left: -100%;
    width: 100%;
    height: 100%;
    background: linear-gradient(90deg, transparent, rgba(255, 255, 255, 0.2), transparent);
    transition: left 0.5s ease;
}

.join-btn:hover {
    transform: translateY(-0.125rem);
    box-shadow: 0 0.25rem 0.75rem rgba(39, 174, 96, 0.4);
    background: linear-gradient(135deg, #219653, var(--success-color));
}

.join-btn:hover::before {
    left: 100%;
}

.join-btn:active {
    transform: translateY(0);
}


/* ===== 资讯分类导航 ===== */
.news-categories {
    width: 100%;
    margin: 0 calc(-1 * clamp(0.5rem, 2vw, 0.9375rem));
    padding: clamp(0.5rem, 2vw, 1rem) clamp(0.5rem, 2vw, 0.9375rem);
    background: transparent;
    overflow-x: auto;
    white-space: nowrap;
    scrollbar-width: none; /* 隐藏滚动条 - Firefox */
    -ms-overflow-style: none; /* 隐藏滚动条 - IE/Edge */
    -webkit-overflow-scrolling: touch;
    position: relative;
}

/* PC端：一行3个分类 */
@media (min-width: 769px) {
    .news-categories {
        overflow-x: visible; /* PC端不需要横向滚动 */
        white-space: normal;
    }
    
    .category-list {
        display: grid;
        grid-template-columns: repeat(10, 1fr);
        gap: clamp(0.5rem, 1.5vw, 0.75rem);
        width: 100%;
        min-width: auto;
        padding-right: 0;
    }
    
    .category-item {
        width: 100%;
        min-width: auto;
        text-align: center;
    }
}

/* 移动端：保持横向滚动 */
@media (max-width: 768px) {
    .news-categories {
        overflow-x: auto;
        white-space: nowrap;
    }
    
    .category-list {
        display: grid;
        grid-template-columns: repeat(4, 1fr);
        gap: clamp(0.3125rem, 1.5vw, 0.625rem);
        padding: clamp(0.3125rem, 1vw, 0.5rem) 0;
        padding-right: clamp(0.5rem, 2vw, 0.9375rem);
        width: max-content;
        min-width: min-content;
    }
    
    .category-item {
        min-width: clamp(6.25rem, 25vw, 7.5rem);
    }
}

/* 隐藏滚动条 - Chrome/Safari */
.news-categories::-webkit-scrollbar {
    display: none;
}

/* 手机端显示细滚动条 */
@media (max-width: 768px) {
    .news-categories::-webkit-scrollbar {
        display: block;
        height: clamp(0.1875rem, 0.8vw, 0.25rem);
    }
    
    .news-categories::-webkit-scrollbar-track {
        background: #f1f1f1;
        border-radius: clamp(0.125rem, 0.5vw, 0.15625rem);
    }
    
    .news-categories::-webkit-scrollbar-thumb {
        background: #888;
        border-radius: clamp(0.125rem, 0.5vw, 0.15625rem);
    }
    
    .news-categories::-webkit-scrollbar-thumb:hover {
        background: #555;
    }
}

.category-list {
    gap: clamp(0.3125rem, 1.5vw, 0.625rem);
    padding: clamp(0.3125rem, 1vw, 0.5rem) 0;
    padding-right: clamp(0.5rem, 2vw, 0.9375rem);
    width: max-content;
    min-width: min-content;
}

.category-item {
    background: var(--card-color);
    border: clamp(0.0625rem, 0.25vw, 0.125rem) solid var(--border-color);
    border-radius: var(--border-radius);
    padding: clamp(0.3rem, 1.5vw, 0.5rem) clamp(0.5rem, 3vw, 0.8rem);
    text-align: center;
    box-shadow: var(--box-shadow);
    transition: var(--transition);
    cursor: pointer;
    flex-shrink: 0;
    min-width: clamp(6.25rem, 25vw, 7.5rem);
}

.category-item:hover {
    transform: translateY(calc(-1 * clamp(0.1875rem, 0.8vw, 0.3125rem)));
    box-shadow: var(--box-shadow-lg);
    border-color: var(--primary-color);
}

.category-item.active {
    background: var(--primary-color);
    border-color: var(--primary-color);
    color: var(--text-white);
    box-shadow: var(--box-shadow-lg);
}

.category-name {
    font-weight: 600;
    color: var(--text-color);
    font-size: clamp(1rem, 2.5vw, 1.2rem);
    white-space: nowrap;
}

.category-item.active .category-name {
    color: var(--text-white);
}

/* ===== Select 选择器样式 ===== */
.category-select-wrapper {
    padding: clamp(0.3rem, 0.8vw, 0.5rem) clamp(0.5rem, 1.5vw, 0.625rem);
    font-size: clamp(1rem, 1.8vw, 1.2rem);
    font-weight: 600;
    width: 33%;
    font-size: clamp(1.5rem, 2.5vw, 1.8rem);
}

.category-select {
    width: 100%;
    padding: clamp(0.5rem, 2vw, 0.75rem) clamp(0.75rem, 3vw, 1.25rem);
    font-size: clamp(0.875rem, 2.5vw, 1rem);
    border: clamp(0.0625rem, 0.25vw, 0.125rem) solid var(--border-color);
    border-radius: var(--border-radius);
    background-color: var(--card-color);
    color: var(--text-color);
    box-shadow: var(--box-shadow);
    cursor: pointer;
    appearance: none;
    -webkit-appearance: none;
    background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='16' height='16' fill='%23666' viewBox='0 0 16 16'%3E%3Cpath d='M7.247 11.14L2.451 5.658C1.885 5.013 2.345 4 3.204 4h9.592a1 1 0 0 1 .753 1.659l-4.796 5.48a1 1 0 0 1-1.506 0z'/%3E%3C/svg%3E");
    background-repeat: no-repeat;
    background-position: right clamp(0.75rem, 3vw, 1.25rem) center;
    background-size: clamp(0.75rem, 2.5vw, 1rem);
    padding-right: clamp(2.5rem, 8vw, 3.5rem);
    transition: var(--transition);
}

.category-select:focus {
    outline: none;
    border-color: var(--primary-color);
    box-shadow: 0 0 0 clamp(0.125rem, 0.5vw, 0.25rem) rgba(var(--primary-rgb), 0.2);
}

.category-select option {
    padding: clamp(0.5rem, 2vw, 0.75rem);
    font-size: clamp(0.875rem, 2.5vw, 1rem);
    background-color: var(--card-color);
    color: var(--text-color);
}

/* 移除 IE 默认箭头 */
.category-select::-ms-expand {
    display: none;
}

/* ===== 资讯卡片 ===== */
.news-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(clamp(15.625rem, 42vw, 18.75rem), 1fr));
    gap: clamp(0.9375rem, 3vw, 1.5rem);
    width: 100%;
    max-width: 100%;
    overflow: hidden;
}

.news-card {
    background: var(--card-color);
    border-radius: var(--border-radius);
    overflow: hidden;
    box-shadow: var(--box-shadow);
    transition: var(--transition);
    border: clamp(0.0625rem, 0.25vw, 0.125rem) solid var(--border-color);
    position: relative;
    cursor: pointer;
    max-width: 100%;
}

.news-card:hover {
    transform: translateY(calc(-1 * clamp(0.25rem, 1vw, 0.5rem)));
    box-shadow: var(--box-shadow-lg);
    border-color: var(--primary-color);
}

/* 资讯类型标签 */
.news-type {
    position: absolute;
    top: clamp(0.5rem, 1.5vw, 0.625rem);
    right: clamp(0.5rem, 1.5vw, 0.625rem);
    padding: clamp(0.1875rem, 0.8vw, 0.3125rem) clamp(0.5rem, 1.5vw, 0.625rem);
    border-radius: clamp(0.75rem, 3vw, 1.25rem);
    font-size: clamp(1rem, 1.8vw, 1.2rem);
    font-weight: 600;
    color: var(--text-white);
    z-index: 1;
}

.type-festival {
    background: var(--festival-color);
}

.type-event {
    background: var(--event-color);
}

.type-weather {
    background: var(--weather-color);
}

.type-important {
    background: var(--accent-color);
}

.news-content {
    padding: clamp(0.9375rem, 3vw, 1.5rem);
}

.news-date {
    display: flex;
    align-items: center;
    gap: clamp(0.3125rem, 1vw, 0.5rem);
    color: var(--text-light);
    font-size: clamp(0.8rem, 2.2vw, 1rem);
    margin-bottom: clamp(0.3125rem, 1vw, 0.5rem);
}

.date-icon {
    font-size: clamp(0.75rem, 2vw, 0.875rem);
}

.news-title {
    font-size: clamp(1.125rem, 2.8vw, 1.375rem);
    margin-top: clamp(1.5rem, 2vw, 1.8rem);
    color: var(--secondary-color);
    font-weight: 700;
    line-height: 1.3;
    word-break: break-word;
    overflow-wrap: break-word;
}

.news-summary {
    color: var(--text-light);
    font-size: clamp(0.9375rem, 2.2vw, 1.125rem);
    line-height: 1.6;
    margin-bottom: clamp(0.5rem, 2vw, 1rem);
    display: -webkit-box;
    -webkit-line-clamp: 3;
    -webkit-box-orient: vertical;
    overflow: hidden;
    word-break: break-word;
    overflow-wrap: break-word;
}

.news-meta {
    display: flex;
    justify-content: flex-end;
    align-items: center;
    padding-top: clamp(0.5rem, 2vw, 1rem);
    border-top: clamp(0.03125rem, 0.125vw, 0.0625rem) solid var(--border-color);
    font-size: clamp(0.8125rem, 2vw, 0.9375rem);
}

.read-btn {
    background: var(--primary-color);
    color: var(--text-white);
    border: none;
    padding: clamp(0.3125rem, 1.5vw, 0.5rem) clamp(0.5rem, 2vw, 1rem);
    border-radius: var(--border-radius);
    cursor: pointer;
    transition: var(--transition);
    font-size: clamp(0.8125rem, 2.2vw, 1rem);
    font-weight: 600;
}

.read-btn:hover {
    background: var(--secondary-color);
    transform: translateY(calc(-1 * clamp(0.0625rem, 0.25vw, 0.125rem)));
    box-shadow: var(--box-shadow);
}

/* ===== 详情弹窗 ===== */
.modal-overlay {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background-color: rgba(0, 0, 0, 0.7);
    display: none;
    justify-content: center;
    align-items: center;
    z-index: 1000;
    padding: clamp(0.5rem, 2vw, 1rem);
    overflow: hidden;
}

.modal-overlay.active {
    display: flex;
}

.modal-container {
    width: 95%;
    height: 95%;
    max-width: 1200px;
    background: var(--card-color);
    border-radius: var(--border-radius);
    box-shadow: var(--box-shadow-lg);
    overflow: hidden;
    display: flex;
    flex-direction: column;
    animation: modalAppear 0.3s ease;
}

@keyframes modalAppear {
    from {
        opacity: 0;
        transform: translateY(calc(-1 * clamp(1rem, 4vw, 1.25rem))) scale(0.95);
    }
    to {
        opacity: 1;
        transform: translateY(0) scale(1);
    }
}

.modal-header {
    background: linear-gradient(135deg, var(--primary-color), var(--secondary-color));
    padding: clamp(0.5rem, 3vw, 0.9375rem);
    color: var(--text-white);
    display: flex;
    justify-content: space-between;
    align-items: center;
    position: relative;
    flex-shrink: 0;
}

.modal-title {
    font-size: clamp(0.9375rem, 3vw, 1.25rem);
    font-weight: 700;
    margin: 0;
    flex: 1;
    padding-right: clamp(1rem, 4vw, 1.25rem);
    word-break: break-word;
    overflow-wrap: break-word;
}

.close-btn {
    background: rgba(255, 255, 255, 0.2);
    border: none;
    color: var(--text-white);
    width: clamp(1.875rem, 6vw, 2.5rem);
    height: clamp(1.875rem, 6vw, 2.5rem);
    border-radius: 50%;
    font-size: clamp(2.5rem, 3vw, 3rem);
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: var(--transition);
    flex-shrink: 0;
}

.close-btn:hover {
    background: rgba(255, 255, 255, 0.3);
    transform: rotate(90deg);
}

.modal-content {
    flex: 1;
    padding: clamp(0.9375rem, 4vw, 1.5625rem);
    overflow-y: auto;
    scrollbar-width: thin;
    scrollbar-color: var(--primary-color) #e0e0e0;
    -webkit-overflow-scrolling: touch;
}

/* 弹窗内容滚动条样式 */
.modal-content::-webkit-scrollbar {
    width: clamp(0.3125rem, 1.5vw, 0.5rem);
}

.modal-content::-webkit-scrollbar-track {
    background: #e0e0e0;
    border-radius: clamp(0.1875rem, 1vw, 0.3125rem);
}

.modal-content::-webkit-scrollbar-thumb {
    background: var(--primary-color);
    border-radius: clamp(0.1875rem, 1vw, 0.3125rem);
}

.modal-content::-webkit-scrollbar-thumb:hover {
    background: var(--secondary-color);
}

.modal-date {
    display: flex;
    align-items: center;
    gap: clamp(0.3125rem, 1vw, 0.5rem);
    color: var(--text-light);
    font-size: clamp(1rem, 2vw, 1.2rem);
    justify-content: flex-end;
}

.modal-type {
    display: inline-block;
    padding: clamp(0.1875rem, 0.8vw, 0.3125rem) clamp(0.5rem, 2vw, 1rem);
    border-radius: clamp(0.75rem, 3vw, 1.25rem);
    font-size: clamp(1.5rem, 1.5vw, 1.8rem);
    font-weight: 600;
}

.modal-body {
    font-size: clamp(1rem, 2vw, 1.5rem);
    line-height: 1.8;
    word-break: break-word;
    overflow-wrap: break-word;
    margin-bottom : 5rem;
}
.modal-body img{
    width : 40rem;
    display: block;
    margin: 0 auto;
}

.modal-body p {
    margin-bottom: clamp(0.9375rem, 3vw, 1.5rem);
}

.modal-body h3 {
    color: var(--secondary-color);
    margin: clamp(1rem, 4vw, 1.25rem) 0 clamp(0.5rem, 2vw, 1rem);
    font-size: clamp(0.8125rem, 2.5vw, 1rem);
}

.modal-body ul, .modal-body ol {
    padding-left: clamp(1rem, 4vw, 1.25rem);
    margin-bottom: clamp(0.9375rem, 3vw, 1.5rem);
}

.modal-body li {
    margin-bottom: clamp(0.3125rem, 1vw, 0.5rem);
}

.modal-images {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(clamp(9.375rem, 25vw, 12.5rem), 1fr));
    gap: clamp(0.5rem, 2vw, 1rem);
    margin: clamp(1rem, 4vw, 1.25rem) 0;
}

.modal-image {
    width: 100%;
    height: auto;
    border-radius: var(--border-radius);
    box-shadow: var(--box-shadow);
}

/* ===== 响应式设计 ===== */
@media (max-width: 768px) {
    .news-categories {
        margin: 0 calc(-1 * clamp(0.3125rem, 1.5vw, 0.625rem));
        padding: clamp(0.5rem, 2vw, 1rem) clamp(0.3125rem, 1.5vw, 0.625rem);
    }
    
    .category-item {
        padding: clamp(0.375rem, 1.2vw, 0.5rem) clamp(0.5rem, 2vw, 1rem);
        min-width: clamp(5.5rem, 22vw, 6.875rem);
    }
    
    .category-name {
        font-size: clamp(0.6875rem, 2.2vw, 0.8125rem);
    }
    
    /* 手机端单列布局 */
    .news-grid {
        grid-template-columns: 1fr;
        gap: clamp(0.5rem, 2vw, 1rem);
    }
    
    .news-card {
        width: 100%;
    }
    
    /* 修复弹窗 */
    .modal-container {
        width: 95vw;
        height: 90vh;
        margin: 5vh auto;
    }
    
    .modal-header {
        padding: clamp(0.5rem, 2vw, 1rem);
    }
    
    .close-btn {
        width: clamp(2.5rem, 5vw, 3rem);
        height: clamp(2.5rem, 5vw, 3rem);
    }
    
    .modal-content {
        padding: clamp(0.5rem, 2vw, 1rem);
    }
    
    .modal-images {
        grid-template-columns: 1fr;
        gap: clamp(0.3125rem, 1.5vw, 0.625rem);
    }
    .modal-body img{
        width : 25rem;
    }
    /* 手机端修复X轴滚动问题 */
    body, .container, header, .news-categories {
        overflow-x: hidden;
    }
    
    .category-list {
        padding-right: clamp(0.9375rem, 3vw, 1.5rem);
    }
}

@media (max-width: 480px) {
    .container {
        padding: 0 clamp(0.25rem, 1vw, 0.5rem);
    }

    .news-categories {
        margin: 0 calc(-1 * clamp(0.25rem, 1vw, 0.5rem));
        padding: clamp(0.5rem, 1.5vw, 0.8rem) clamp(0.25rem, 1vw, 0.5rem);
    }
    
    .category-item {
        padding: clamp(0.3125rem, 1vw, 0.5rem) clamp(0.5rem, 1.5vw, 0.8rem);
        min-width: clamp(5rem, 20vw, 6.25rem);
        border-radius: clamp(0.1875rem, 0.8vw, 0.3125rem);
    }
    
    .category-name {
        font-size: clamp(1.5rem, 2.2vw, 1.8rem);
    }

    .news-card {
        border-radius: clamp(0.1875rem, 0.8vw, 0.3125rem);
    }
    .news-type {
        font-size: clamp(1.5rem, 2.2vw, 1.8rem);
    }
    .news-date {
        font-size: clamp(1rem, 2.2vw, 1.2rem);
    }
    .news-content {
        padding: clamp(0.5rem, 2vw, 1rem);
    }
    
    .news-title {
        font-size: clamp(1.5rem, 2.2vw, 1.8rem);
        line-height: 1.4;
    }
    
    .news-summary {
        font-size: clamp(1.5rem, 2.2vw, 1.8rem);
        line-height: 1.5;
        -webkit-line-clamp: 2;
    }
    
    .modal-container {
        width: 98vw;
        height: 95vh;
        margin: 2.5vh auto;
        border-radius: clamp(0.1875rem, 0.8vw, 0.3125rem);
    }
    
    .modal-title {
        font-size: clamp(1.5rem, 2.2vw, 1.8rem);
    }
    
    .modal-body {
        font-size: clamp(1.5rem, 2.2vw, 1.8rem);
        line-height: 1.6;
    }
    
    .modal-body h3 {
        font-size: clamp(1.5rem, 2.2vw, 1.8rem);
        margin: clamp(0.9375rem, 3vw, 1.5rem) 0 clamp(0.5rem, 1.5vw, 0.8rem);
    }
    
    .read-btn {
        padding: clamp(0.25rem, 1vw, 0.4rem) clamp(0.5rem, 1.5vw, 0.8rem);
        font-size: clamp(1.5rem, 2.2vw, 1.8rem);
    }
}

/* 平板设备适配 */
@media (min-width: 769px) and (max-width: 1024px) {
    .news-grid {
        grid-template-columns: repeat(2, 1fr);
        gap: clamp(0.75rem, 2.4vw, 1.2rem);
    }
    
    .container {
        padding: 0 clamp(0.9375rem, 3vw, 1.25rem);
    }
    
    .news-categories {
        margin: 0 calc(-1 * clamp(0.9375rem, 3vw, 1.25rem));
        padding: clamp(0.5rem, 2vw, 1rem) clamp(0.9375rem, 3vw, 1.25rem);
    }
}

/* ===== 滚动条美化 ===== */
::-webkit-scrollbar {
    width: clamp(0.3125rem, 1.5vw, 0.5rem);
    height: clamp(0.3125rem, 1.5vw, 0.5rem);
}

::-webkit-scrollbar-track {
    background: var(--light-color);
    border-radius: var(--border-radius);
}

::-webkit-scrollbar-thumb {
    background: var(--primary-color);
    border-radius: var(--border-radius);
}

::-webkit-scrollbar-thumb:hover {
    background: var(--secondary-color);
}

/* 大屏幕适配（一行3个分类，间距更大） */
@media (min-width: 1200px) {
    .news-grid {
        grid-template-columns: repeat(3, 1fr); /* 大屏幕显示3列 */
        gap: clamp(1.5rem, 4vw, 2rem);
    }
    
    .category-list {
        gap: clamp(0.75rem, 2vw, 1rem);
    }
}

/* 中等屏幕适配（2列布局） */
@media (min-width: 1025px) and (max-width: 1199px) {
    .news-grid {
        grid-template-columns: repeat(2, 1fr);
        gap: clamp(1.2rem, 3vw, 1.5rem);
    }
}